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[USBSTOR]

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- Fix bug in usbstor, which did not take the offset into account

svn path=/branches/usb-bringup-trunk/; revision=55088
This commit is contained in:
Johannes Anderwald 2012-01-23 02:49:40 +00:00
parent 9758b6cc87
commit 8baf90438a
1 changed files with 20 additions and 2 deletions
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22
drivers/usb/usbstor/scsi.c
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@ -576,7 +576,7 @@ USBSTOR_SendRequest(
if (Context->TransferDataLength) if (Context->TransferDataLength)
{ {
// //
// check if the original request already does not have an mdl associated // check if the original request already does have an mdl associated
// //
if (OriginalRequest) if (OriginalRequest)
{ {
@ -589,7 +589,25 @@ USBSTOR_SendRequest(
if (CommandLength == UFI_READ_WRITE_CMD_LEN) if (CommandLength == UFI_READ_WRITE_CMD_LEN)
{ {
MdlVirtualAddress = MmGetMdlVirtualAddress(OriginalRequest->MdlAddress); MdlVirtualAddress = MmGetMdlVirtualAddress(OriginalRequest->MdlAddress);
ASSERT(MdlVirtualAddress == Context->TransferData); if (MdlVirtualAddress != Context->TransferData)
{
//
// lets build an mdl
//
Context->TransferBufferMDL = IoAllocateMdl(Context->TransferData, MmGetMdlByteCount(OriginalRequest->MdlAddress), FALSE, FALSE, NULL);
if (!Context->TransferBufferMDL)
{
//
// failed to allocate MDL
//
return STATUS_INSUFFICIENT_RESOURCES;
}
//
// now build the partial mdl
//
IoBuildPartialMdl(OriginalRequest->MdlAddress, Context->TransferBufferMDL, Context->TransferData, Context->TransferDataLength);
}
} }
// //